Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2009-4142

The htmlspecialchars function in PHP before 5.2.12 does not properly handle (1) overlong UTF-8 sequences, (2) invalid Shift_JIS sequences, and (3) invalid EUC-JP sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks by placing a crafted byte sequence before a special character.

Published

2009-12-21T16:30:00.343

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-79
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application php php ≤ 5.2.11 Yes
Application php php 1.0 Yes
Application php php 2.0 Yes
Application php php 2.0b10 Yes
Application php php 3.0 Yes
Application php php 3.0.1 Yes
Application php php 3.0.2 Yes
Application php php 3.0.3 Yes
Application php php 3.0.4 Yes
Application php php 3.0.5 Yes
Application php php 3.0.6 Yes
Application php php 3.0.7 Yes
Application php php 3.0.8 Yes
Application php php 3.0.9 Yes
Application php php 3.0.10 Yes
Application php php 3.0.11 Yes
Application php php 3.0.12 Yes
Application php php 3.0.13 Yes
Application php php 3.0.14 Yes
Application php php 3.0.15 Yes
Application php php 3.0.16 Yes
Application php php 3.0.17 Yes
Application php php 3.0.18 Yes
Application php php 4 Yes
Application php php 4.0 Yes
Application php php 4.0 Yes
Application php php 4.0 Yes
Application php php 4.0 Yes
Application php php 4.0 Yes
Application php php 4.0 Yes
Application php php 4.0 Yes
Application php php 4.0 Yes
Application php php 4.0.0 Yes
Application php php 4.0.1 Yes
Application php php 4.0.1 Yes
Application php php 4.0.1 Yes
Application php php 4.0.2 Yes
Application php php 4.0.3 Yes
Application php php 4.0.3 Yes
Application php php 4.0.4 Yes
Application php php 4.0.4 Yes
Application php php 4.0.5 Yes
Application php php 4.0.6 Yes
Application php php 4.0.7 Yes
Application php php 4.0.7 Yes
Application php php 4.0.7 Yes
Application php php 4.0.7 Yes
Application php php 4.0.7 Yes
Application php php 4.1.0 Yes
Application php php 4.1.1 Yes
Application php php 4.1.2 Yes
Application php php 4.2 Yes
Application php php 4.2.0 Yes
Application php php 4.2.1 Yes
Application php php 4.2.2 Yes
Application php php 4.2.3 Yes
Application php php 4.3.0 Yes
Application php php 4.3.1 Yes
Application php php 4.3.2 Yes
Application php php 4.3.3 Yes
Application php php 4.3.4 Yes
Application php php 4.3.5 Yes
Application php php 4.3.6 Yes
Application php php 4.3.7 Yes
Application php php 4.3.8 Yes
Application php php 4.3.9 Yes
Application php php 4.3.10 Yes
Application php php 4.3.11 Yes
Application php php 4.4.0 Yes
Application php php 4.4.1 Yes
Application php php 4.4.2 Yes
Application php php 4.4.3 Yes
Application php php 4.4.4 Yes
Application php php 4.4.5 Yes
Application php php 4.4.6 Yes
Application php php 4.4.7 Yes
Application php php 4.4.8 Yes
Application php php 4.4.9 Yes
Application php php 5 Yes
Application php php 5.0 Yes
Application php php 5.0 Yes
Application php php 5.0 Yes
Application php php 5.0.0 Yes
Application php php 5.0.0 Yes
Application php php 5.0.0 Yes
Application php php 5.0.0 Yes
Application php php 5.0.0 Yes
Application php php 5.0.0 Yes
Application php php 5.0.0 Yes
Application php php 5.0.0 Yes
Application php php 5.0.1 Yes
Application php php 5.0.2 Yes
Application php php 5.0.3 Yes
Application php php 5.0.4 Yes
Application php php 5.0.5 Yes
Application php php 5.1.0 Yes
Application php php 5.1.1 Yes
Application php php 5.1.3 Yes
Application php php 5.1.4 Yes
Application php php 5.1.5 Yes
Application php php 5.1.6 Yes
Application php php 5.2.0 Yes
Application php php 5.2.1 Yes
Application php php 5.2.2 Yes
Application php php 5.2.3 Yes
Application php php 5.2.4 Yes
Application php php 5.2.5 Yes
Application php php 5.2.6 Yes
Application php php 5.2.8 Yes
Application php php 5.2.9 Yes
Application php php 5.2.10 Yes
References